Microbiology MCQs

Page No. 28

The distinguishing characteristic of a positive delayed type hypersensitivity skin test is______________?


aErythema


bNecrosis


c Induration


dVasculitis


View Answer Erythema

IgG antibodies have a half-life of approximately_______________?


a 1 hour


b1 day


c1 week


d1 Month


View Answer 1 Month

Human immunoglobulins are divided based on_____________?


aFunctional differences


b Structural differences


cComplemented fixation


dNone of the above



Toxoids are_________________?


aantigenic and toxic


bantigenic and non-toxic


cnon-antigenic and toxic


dnon-antigenic and non-toxic



IgG has subclasses_______________?


a1


b2


c3


d4


View Answer 4

Adjuvant given along with antigens are going to________________?


aIncrease toxigenicity


bIncrease antigenicity


cReduce the antigenicity


dreduce the toxigenicity


View Answer Increase antigenicity

Following reaction are produced by heterophil antigens except_____________?


aForssman antigen antibody reaction


b Weil-Felix reaction


cPaul bunnel reaction


dWidal reaction


View Answer Widal reaction

Characters of exotoxin include all, except_______________?


aProtein polysaccharide complex


bHeat labile


cHighly poten


dHas specific tissue affinity



Anaerobic bacteria can be cultured in__________________?


aL-J medium


bRobertson cooked meat medium


cLoefflers medium


dSabourauds agar



Louis Pasteur is not associated with_______________?


aIntroduction of complex media


bDiscovery of Rabies Vaccine


cDiscovery of M. Tuberculosis


dDisproved spontaneous regression theory



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